/**
 * Created by h p on 2016/3/31.
 */
public class Main{
        public static void main(String[] args) {
            try {
                int number = Integer.parseInt(args[0]);
                System.out.println(number++);
            }catch(NumberFormatException ex){
                System.out.println("必须输入数字");
            }
        }
        }